
PROX Cast Piston (manufacturer part number: 01.1325.A) — aluminum piston for Cross use, designed for replacement during top-end rebuilds on compatible 2-stroke engines.
This cast piston is aimed at motocross riders looking for a robust replacement part that adheres to original specifications. The domed head respects the expected chamber profile on certain 2-stroke engine kits, while the Mos2 treated skirt provides a finish designed to minimize contact wear and facilitate the break-in process. The oversize "A" corresponds to a slightly increased diameter, to be mounted on a cylinder bored to compatible specifications.
Associated parts / useful replacement references:
Top reported compatibilities: Honda CR 250 R (ME03) 2005, 2006, 2007. Always check the specifications and references before installation for a perfect match with your engine.